Biohac sleep calculators

Precise tools for better sleep

Biohac calculators help you plan your evening recovery, shift your body clock and track the full moon's influence - without confusion or guesswork.

Sleep cyclesCircadian rhythmsFull moon

Explore the tools Products for better sleep

Five tools

A complete set of sleep planning calculators, ready when you arrive.

No sign-in required

Use them directly in your browser - no installation or account needed.

All tools

Choose a tool and plan your sleep

Five Biohac tools in one place - plus trusted products and in-depth sleep analysis.

New

SleepScore - today's sleep conditions

Enter your caffeine, activity, stress and weather - we will calculate your sleep score from 0–100 and show what helps and what gets in the way.

Check your score New

Autophagy / keto calculator

Enter your last meal and fasting duration to see the model's ketosis and autophagy phases and when your eating window opens.

Calculate fasting phases Tool

Sleep calculator

Find the best times to fall asleep and wake up based on complete sleep cycles.

Open calculator Tool

Body clock adjustment

Calculate how many days you need to gradually shift your body clock.

Open calculator Tool

When is the full moon?

Explore the full moon calendar and dedicated pages for each month.

View calendar Tool

Is it a full moon?

A quick yes or no: check whether we are currently within the full moon window.

Check status Recipes

Biohac recipes

Interactive drink recipes for sleep, energy and focus. Scale ingredients and choose variations.

Explore recipes Store

Biohac Store

Glasses, accessories and supplements for better sleep - from the Biohac store.

Visit the store External site

Sleep analysis

In-depth sleep quality analysis and personalised recommendations on biohac.pl.

Start analysis

About Biohac Labs

Why did we build these tools?

Biohac is a Polish brand focused on better sleep and recovery - from blue-light-blocking glasses and sleep accessories to practical biohacking knowledge.

Biohac Labs puts this knowledge into practice. Instead of guessing when to go to bed or how to prepare for a full moon, you get a simple, calculated answer - in Polish local time and without creating an account.

Explore Biohac products

Free, no sign-in requiredAll calculators work directly in your browser - on desktop and mobile.
Data for PolandDates and times use Polish local time - CET in winter and CEST in summer.
Calculated liveFull moon status and countdowns update in real time.

Sleep knowledge

A professional, evidence-based approach to sleep

At Biohac, we look at sleep through chronobiology: what matters most is light, circadian rhythm and consistency. Our tools and products help you care for these three foundations - without magic or empty promises.

Light and melatonin

Evening blue light from screens and bright lamps delays melatonin release. Reducing it - for example with blue-light-blocking glasses - makes falling asleep easier.

Circadian rhythm

Your body clock benefits from predictability. Consistent sleep times and gradual schedule changes - before a trip, for example - help you function better during the day.

Evening routine

A dark bedroom, winding down and a consistent bedtime routine influence sleep quality - often more than the moon phase itself.